Keychron Q0 Max vs MMD KM21 Ultra
Get the Keychron Q0 Max for the 1,800 mAh battery and screw-in stabilizers.
The differences that matter
Skip the 40-row spec sheet. These are the specs that change how each board feels, sounds, and fits your desk.
Keychron Q0 Max
MMD KM21 Ultra
Battery
1,800 mAh
980 mAh
Mount style
Gasket Mount
Top Mount
Plate material
Steel
Plastic
Screw-in stabilizers
Yes
No
Backlight
RGB, south-facing
RGB
- Keychron Q0 Max
- MMD KM21 Ultra
- Performance
- 7867
- Build quality
- 8882
- Productivity
- 9589
- Customizability
- 9689
- Portability
- 8786
- Layout size: Numpad
- Connection: Bluetooth, 2.4 GHz, Wired
- Hot-swappable
- Case material: Aluminum
- Knob
- QMK
What owners say
Ratings and quotes collected from verified store reviews, including the critical ones.
Keychron Q0 Max
4 owner reviews
“Feels very solid, and doesnt slide around on my desk pad. Keys are very satisfying.”
MMD KM21 Ultra
No owner reviews collected yet.
Keychron Q0 Max vs MMD KM21 Ultra specs
Every tracked spec, side by side. Rows marked with a dot differ between the boards.
7 of 26 specs differ
Keychron Q0 Max
MMD KM21 Ultra
Switch options
Hot-swappable
Mount style
Sound dampening
Screw-in stabilizers
Layout size
Layout standard
Ergonomics
Knob
Display
Connection
Max polling rate
Battery
USB-C
Case material
Plate material
Keycaps
Weight
Dimensions
Typing angle
Backlight
QMK
VIA
N-key rollover
Mac & Windows
Released
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